Re: New function pg_stat_statements_reset_query() to reset statistics of a specific query

Ashutosh Sharma <ashu.coek88@gmail.com>

From: Ashutosh Sharma <ashu.coek88@gmail.com>
To: Haribabu Kommi <kommi.haribabu@gmail.com>
Cc: Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-06-21T12:10:23Z
Lists: pgsql-hackers
On Wed, Jun 20, 2018 at 1:00 PM, Haribabu Kommi
<kommi.haribabu@gmail.com> wrote:
> The pg_stat_statements contains the statistics of the queries that are
> cumulative.
> I find that any optimizations that are done to improve the performance of a
> query
> are not be visible clearly until the stats are reset. Currently there is a
> function to
> reset all the statistics, I find it will be useful if we a function that
> resets the stats of
> a single query, instead of reseting all the queries.
>
> Attached is a simple patch with implementation. Comments?

The idea looks interesting to me. But, as Euler Taveira mentioned,
can't we extend an existing function pg_stat_statements_reset()
instead of adding a new one and update the documentation for it. Also,
in the test-case it would be good to display the output of
pg_stat_statements before and after deleting the query. Thanks.

-- 
With Regards,
Ashutosh Sharma
EnterpriseDB:http://www.enterprisedb.com


Commits

  1. Extend pg_stat_statements_reset to reset statistics specific to a

  2. Default monitoring roles